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$707+ Cheap flights from Dulles Intl (IAD) to Adelaide (ADL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ADL
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Find flight deals from Dulles Intl to Adelaide

Cheapest flights from Dulles Intl to Adelaide
Explore the most affordable flight options available from Dulles Intl to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:35 pmIAD - ADL
2 stops34h 05mUnited Airlines
Sun 12/77:15 amADL - IAD
2 stops33h 11mUnited Airlines
Deal found 10/27$1,128
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:00 pmIAD - ADL
1 stop24h 00mUnited Airlines
Sat 1/102:55 pmADL - IAD
1 stop30h 07mUnited Airlines
Deal found 10/25$1,217
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:30 amIAD - ADL
2 stops33h 30mUnited Airlines
Mon 1/122:55 pmADL - IAD
2 stops23h 57mUnited Airlines
Deal found 10/25$1,218
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1010:35 pmIAD - ADL
2 stops43h 25mUnited Airlines
Sat 1/102:55 pmADL - IAD
2 stops29h 59mUnited Airlines
Deal found 10/25$1,221
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1710:11 pmIAD - ADL
3 stops48h 14mAir Canada
Thu 12/117:55 pmADL - IAD
3 stops40h 01mAir Canada
Deal found 10/28$1,283
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:04 amIAD - ADL
2 stops40h 06mAmerican Airlines
Sun 11/307:50 amADL - IAD
2 stops30h 21mAmerican Airlines
Deal found 10/28$1,448
This Qantas Airways deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/165:03 pmIAD - ADL
2 stops35h 02mQantas Airways
Mon 12/87:00 pmADL - IAD
2 stops36h 48mQantas Airways
Deal found 10/28$1,609
This Gurufare deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/55:27 pmIAD - ADL
2 stops37h 08mQantas Airways
Sun 11/308:55 pmADL - IAD
2 stops41h 16mQantas Airways
Deal found 10/26$1,642
This Qantas Airways deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:22 pmIAD - ADL
2 stops28h 08mMultiple Airlines
Fri 1/912:00 pmADL - IAD
2 stops24h 47mMultiple Airlines
Deal found 10/28$1,658
This Qantas Airways deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/155:27 pmIAD - ADL
2 stops35h 58mQantas Airways
Tue 12/97:00 pmADL - IAD
2 stops43h 29mQantas Airways
Deal found 10/28$1,659

Cheap flight deals from Dulles Intl to Adelaide

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Adelaide (ADL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$891
(Air Canada)

One-way from

$707
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,661
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Adelaide flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Adelaide flights.
Search Deals
From Washington, D.C. Dulles Intl to Adelaide
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Adelaide
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($587 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($103 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Adelaide that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Adelaide that are best for you.

Fly from

Dulles Intl

Fly to

Adelaide

Route

Depart

Return

Price

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Mon 3/9

12:40 pm-8:30 am

1 stop29h 20m

Adelaide

Fri 3/20

6:10 am-12:25 am

2 stops32h 45m

$1,114

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Tue 11/18

12:35 pm-2:10 pm

2 stops34h 05m

Adelaide

Sun 12/7

7:15 am-12:56 am

2 stops33h 11m

$1,128

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sun 4/19

5:30 pm-10:55 am

2 stops27h 55m

Adelaide

Thu 4/23

6:05 am-9:04 pm

2 stops28h 29m

$1,137

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Wed 12/10

10:08 pm-9:30 am

2 stops43h 52m

Adelaide

Sat 1/10

2:55 pm-7:07 am

1 stop31h 42m

$1,221

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Thu 12/11

8:30 am-9:30 am

2 stops33h 30m

Adelaide

Sat 1/10

2:55 pm-5:21 am

2 stops29h 56m

$1,221

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Wed 11/19

5:27 pm-10:05 pm

2 stops37h 08m

Adelaide

Tue 12/9

12:05 pm-10:59 pm

2 stops50h 24m

$1,609

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Tue 12/9

5:22 pm-1:00 pm

2 stops28h 08m

Adelaide

Fri 1/9

12:00 pm-9:17 pm

2 stops24h 47m

$1,658

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Tue 12/9

6:00 pm-10:30 pm

2 stops37h 00m

Adelaide

Fri 1/9

6:10 am-7:35 pm

2 stops28h 55m

$1,684

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Wed 11/19

5:27 pm-10:05 pm

2 stops37h 08m

Adelaide

Sun 12/7

6:05 am-10:43 pm

2 stops32h 08m

$1,696

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Mon 3/23

3:35 pm-7:25 am

2 stops49h 20m

$727

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 16 results
1
2
  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Adelaide flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Adelaide flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Adelaide flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Adelaide flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Adelaide flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Adelaide

Have a flexible travel schedule? Discover the best time to fly to Adelaide from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Adelaide

What is the cheapest time of day to fly from IAD to ADL?

Find hourly flight availability from Dulles Intl to Adelaide. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Adelaide in the afternoon. If you’re flexible enough to do this you can expect to save up to 63% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Adelaide

Get insights into the airlines that provide service to Adelaide. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Adelaide. Reviews last updated October 28, 2025.
Peruse reviews from past customers who have flown with Qantas Airways from Washington, D.C. Dulles Intl Airport to Adelaide to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
924 reviews

Overall

7.5

Food

7.0

Entertainment

7.2

Comfort

7.5

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.
Qantas Airways
7.5
Good
924 reviews
Qantas Airways
7.5
Good
924 reviews

Overall

7.5

Food

7.0

Entertainment

7.2

Comfort

7.5

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Adelaide. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Adelaide from Washington, D.C. Dulles Intl?

    Located just 4.1 mi from the city center, Adelaide is the airport most travelers will use when flying to Adelaide from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Adelaide (ADL) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 1 airline.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Adelaide?

    Departing from Washington, D.C. Dulles Intl Airport to Adelaide will take you 29h 20m. The distance between Washington, D.C. Dulles Intl Airport and Adelaide is about 10437 mi.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Adelaide round-trip?

    Flying on Qantas Airways is currently your cheapest option to Adelaide, with prices starting at $1,070. Qantas Airways is 45% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Dulles Intl to Adelaide that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Adelaide flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Adelaide?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Adelaide.

  • Can I find deals for business class flights from Dulles Intl to Adelaide?

    Yes. Cheapflights offers flight deals from Dulles Intl to Adelaide by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Top airline flying from Dulles Intl to Adelaide

Discover the top airline that operate flights from Dulles Intl to Adelaide. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,070Average$1,283FlexibilityNo cancel feeOn-time74%

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